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Crown condition overrated?

This is a discussion on Crown condition overrated? within the Accuracy forums, part of the M14 M1A Forum category; I've seen similar arguments/tests, one where a guy took a ball peen hammer to the muzzle of a new CZ550 . Different damage had no ...


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Old March 26th, 2016, 01:35 PM   #16
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I've seen similar arguments/tests, one where a guy took a ball peen hammer to the muzzle of a new CZ550 . Different damage had no resulting shift in POI or a massive shift. I've also seen guys chasing accuracy issues, only to discover it was something as simple as crown damage. The worst being crowns not cut perpendicular to the bore. YMMV I guess. Guns are tools like any other, and I'm never fond of abusing good tools.

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Old March 6th, 2017, 12:20 PM   #17
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Sgt, I've used the carriage bolt trick on a Remington Nylon 66 to dress a muzzle. Chucked the bolt in a drill press, clamped the barrel in a vise, put a little valve grinding compound on the bolt head. Worked great. Just proves that you can Redneck anything.

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Old March 6th, 2017, 05:30 PM   #18
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I had an M1A that had been shot and then stored away for 20 years without cleaning.
I bought it from an estate, and noticed the dirty bore, but it was cheap enough that I didn't care
( and I had a spare Barnet hsavy barrel any how.)

So the first time I cleaned the barrel, MOST OF THE RIFLING CAME OUT WITH THE FOULING.
OOPS!
Basically a smooth bore for a few inches at the muzzle.

But before I threw that barrel away, just as an experiment, I unwound it, stuck it in the lathe, choppd it back to 18.5", and pretended to do a crown.

This was my very first attempt at a Ca aduan legal (18.5") SHORTIFIED M14, and dammed if it didn't shoot 2" groups at 100 yds with IVI 7.62 NaTO BALL.

Surprising some times how well a rifle will shoot no matter how rough the bore or crown looks.

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Old March 6th, 2017, 06:46 PM   #19
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Very curious indeed......not sure what to think! I wonder if I bash my crowns with a crowbar.....will I shoot better???

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Old March 6th, 2017, 06:56 PM   #20
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CrackHo, use a chisel and hammer for best results!

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Old March 11th, 2017, 04:38 AM   #21
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Marbles

Gramps used an old marble and lapping compound, said that made it easier to listen to grandma!

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Old March 11th, 2017, 04:43 AM   #22
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Quote:
Originally Posted by SGT John SWF View Post
I read an article in G&A or one of the other Gunzines years ago about repairing your Crown.
It said use a Carriage Bolt in an electric drill and Valve Grinding compound and have at it.

I will just leave that thought with you.
If you dont pursue that method like a ham fisted ape that does indeed work.

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Old March 11th, 2017, 04:44 AM   #23
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Lee reloading case trimmer and .30cal pilot makes a good crowning tool, too.

;)

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Old March 11th, 2017, 05:18 AM   #24
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My ol Turkish mauser was cleaned carelessly with steel cleaning rods for years before it became my rifle at 8 years old. The crown not that great. And the turks didn't make the best quality rifles. Yet it can run circles around most modern firearms. It doesn't make sense.

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Old March 11th, 2017, 06:25 AM   #25
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Dinged up crown is similar to running your car over speed bumps at 100mph in Walmart parking lot, gives quite a jolt wouldn't you think?? Check my math but 2700fps is something on the order of 1840 mph hitting a speed bump. I don't want any dinged up barrel crowns, much prefer nice and smooth.

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Old March 11th, 2017, 08:08 AM   #26
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I like my crown in a cup with a little ice.

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